Nightly backward compatibility tests failing

[jpraynaud]

Why

Since December, 21st 2024, the Nightly backward compatibility tests have been consistently failing:

• 12/21: https://github.com/input-output-hk/mithril/actions/runs/12441332694
• 12/22: https://github.com/input-output-hk/mithril/actions/runs/12450455943
• 12/23: https://github.com/input-output-hk/mithril/actions/runs/12460080578

Tests scenarios

Previous version of an aggregator node with unstable signer nodes

Error: Unexpected status code from Aggregator: 404 Not Found
Error: Timeout exhausted assert_node_producing_snapshot, no response from http://localhost:8080/aggregator/artifact/cardano-database

Previous versions of signer nodes with unstable aggregator node

Error: Timeout exhausted assert_node_producing_snapshot, no response from http://localhost:8080/aggregator/artifact/cardano-database

Previous versions of a client node with unstable aggregator and signer nodes

Error: Timeout exhausted assert_node_producing_snapshot, no response from http://localhost:8080/aggregator/artifact/cardano-database

What

Run the verification of the CardanoDatabase artifacts in the end to end test only when the signed entity type is activated.

How

• Verify the CardanoDatabase artifacts in the end to end test only when the signed entity type is activated.